gh-115231: fill __module__ for built-in staticmethods

[skirpichev]

• Issue: Empty __module__ attribute for built-in static methods #115231

[skirpichev]

See also #82062: we could fix that issue in a similar approach, using __objclass__.__module__ to set the __module__ attribute. Right now for built-in instance methods its missing (c.f. pure-python classes):

>>> int.to_bytes.__module__
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
AttributeError: 'method_descriptor' object has no attribute '__module__'. Did you mean: '__reduce__'?

[skirpichev]

CC @serhiy-storchaka

[serhiy-storchaka]

LGTM. But I would look what can we do with unbound instance methods and class methods. Because providing __module__ only for static methods loses purpose.

[skirpichev]

class methods

Hmm, I don't see ways to speedup this. Maybe solution is just to pay this price at time of access the __module__ attribute.

only for static methods loses purpose

Why? Something meaningful is better than just None.

[skirpichev]

CC @vstinner

[vstinner]

LGTM

[vstinner]

I clicked on [Update branch] since this PR was created many months ago.